Reenforced supporting member



July 3, 192s. 1,675,768

P. H. sEREFF Y REE-NFORCED SUPPORTING MEMBER Filed May 1 2 Sheets-Sheet 1 July 3, 1928. 1,675,768

P. H. SEREFF REENFORCED SUPPORTING MEMBER Filed May 12, 1926 2 sheets-sheet 2 gnwntoz Gamm@ Patented July 3,

l UNITED STA-TES PATENT OFFICE.

um n; man, or Lm, omo. manca-n surronme mman.

application nea my 1a, im. smal nu. 106,643.A

i In the construction of buildings it has frequently been .found necessary toV forego lire'proof concrete structures; not because of the expense of the material itself, but be-Y cause'of the great expenseinvolved intime, labor and material necessary in the erection of the temporary centering and form work and in the. fabrication of the different ma- Alll terials entering into its erection. -It Jhas been estimated that this expenseA alone amounts to 40%' of the entirecost of construction. AAn object of lthe present inven- Vtion therefore resides in the provision of a fabricated 'reenforced supporting member with selfsustaining features whereby the weightof the green concrete will be maini' tained` without the use of external supports ing Another Objectf the invtion consists in the use of reenforcing steel rods which serve to suspend the'weight of the green concrete while settin Other. ob ects and -advantages of vthe in-A vention will be apparent from the followingvdeseription when taken in connection with the accompanying drawings; in which,

Figure .1 is a side elevation ofthe as- Y sembled reenforced supporting member.

through a concrete floor hFiglre 2 is an enlarged fragmentary view t e Figure 3 is a vertical section through one end of the reenforced supporting' member and shear late.

AFigure 4 1s a fragmentary elevational viewlA of one of the vtwo sections forming the main body of each supporting member.

Figure5 is a section taken on line 5--5 of Figure 4.

Figure 6 is al fragmentary sectional view showing the supporting members imbedded in the concrete. Figure 7 is a perspective view, partly broken away, of an expansion rod used inV the construction. Figure-8 is a fragmentary side elevation of a modified form of the invention.

Fi 9 is a vertical section through the reen orcing member shown in Figure 8; and

to back as shown in Fi Vthe channel members 4. This loo vFigure 10 is a detail perspective view showing thev supportingmeans for the soit form.

Lwill now describe inv detail theseveral elements of both the preferred and modi-l Afied forms of the invention; Vsimilar'refer- 'ence' numerals indicating corresponding parts in the 'several v iews.

Referring to that form of thevinvention s hownl in Figures 1` to 7 inclusive, the

numeral 1 indicates generally the metal reenforced supporting'member which is composed of two frame members2 placed back to back and'permanently secured together bywelding or any other preferred manner.

Each of these frame members 2 is of sub-v stantially rectangular outline and' is provided at its up r edge with the channel vformation 3 and? its lower edge. with the channel formation 4.' These lower channel members 4 of the two frame members combine to provide a horizontal base portion on which thecore forms to be later described are mounted.

Between the -upper and Alower channel formations and 4 the. frame lmembersvare provided with inclined braces '5 preferably integrally formed therewith and semicircw" lar '1n cross section. These braces are arranged in parallel relationin each. frame member and'when the latter are placed back i gures 3'v and 6 the braces coa'ct to form a zlgzag formation as disclosed in Fi 1.'

In securing t efframe members 2 in their back to back relation shear plates 6 are in serted' between the frame members at each end thereof to strengthen and reenforee the same. Also secured at each upper end of each frame member is a-reenforcing rod 7 provided with an intermediate looped portion 8 which extends parallel and adjacent to the horizontal base portion com of portion 8 of the reenforcing rod 7 passes under .'hook's 8 which are anchored to the frame pose this portion, .are provided with struck lll) 'and lower flanges 22. .These rame membersv out tongues 1() between which and the flanges 9 are received the lower edges of the core forms 11 as more clearly shown in Figure 6.

These core forms 11 extend from one reenforcing member to the next adjacent reenforcing member and in order that these reenforcing members may be properly spaced I have provided spacing rods 12 (Fig. 7) which are provided with down turned fingers 13 adapted to be inserted in the spaces 'between the upper channel portions 3 of the frame members 2.

I n Figure 6 a section of a floor or ceiling is shown disclosing two of the reenforced supporting members and the spacing member 12in cooperation'therewith. In this figure the concrete has been poured into the forms and the expanded metal or the like 14 attached to the horizontal base portion and the plaster applied thereto in the usual manner. The method of applying the plaster or of applying the floor structure to the upper portion of the concrete formation forms no part of the present invention andl therefore need not be described in detail. i

In Figures 8, 9 and 10 of the drawing I have shown a slightly modified vreenforc'ed supporting member for concrete constructions but which nevertheless is also composed mainly of two metallic frame members 20 provided with upper channel members 21 are alsoplaced back to back and permanently f secured by welding or otherwise, and are provided with angularly disposed braces 23 of substantially semicircular cross section. This form of the invention also is provided with shear plates 24.- disposed at each end of the reenforced supporting membersand interposed between the frame members 20.

A reenforcing rod 25 is permanentl secured at each end to the respective en s of each channel portion 21 of the frame members. and is provided with a looped portion 26 which extends parallel with and adjacent to the bottom edge of the frame member.-

Anchored to the bottom portion of the framemember -are a plurality of hooks 27 which 'encrage over this loo(ped portion 26 of the reen'iiorcmg rod 25 an which serve to transmit the load on the lower portion of the reenforced supporting member to the upper portion thereof. The construction thus far described in connection with Figures 8, 9 and 10 is identical with that previously described in connection with Figures 1 to 7 inclusive except`for.the flanges' 22.- In the present modified form of the invention the frame members 20 instead of being provided with lower channel portions extending throughout .their length are provided with relatively short channel portions or soilit forms 28 permanently secured at each end of the frame members and these portions are provided with struck out tongues 29 identical with the tongues 10 previously described. In lieu of having these channel portions extending throughout the length of the frame member I provide a suspended soffit form which may be composed of aplurality ofsections of random lengths adapted'to'be removed afterV wires are then twisted as indicated by numeral 32'in Fig. 8 so as to draw the'soit forms up into substantial alignment with the channel portions 28 of the frame members 20. The core forms 11 are supported between formed in the base of the sollit forms. These the fianges of the channel members 28 and f the tongues 29 struck therefrom inthe same manner as previously described, and the spacing rods 12 will have their down turned fingers 13 disposed between the edges of the channel members 21. as previously described in connection with `the disclosure fof Figures 1 to v'i' inclusive.

This present form. of the' invention has the advantage over the first-'described :form in that vafter the concrete lo poured in the usual way the solit forms 30 whiclrlare composed of a plurality of relatively 'short sections may be removed after untwisting or clipping oil the ends of the wire 31v and may be used on other constructions. The ends oi the wires 31 may then serve to support metal lathing or the like for the receptionV of the plastered ceiling.

In operation, members are arranged in (parallelvrelation, properly spaced apart, an expansion rods 12 are then placed at each of the supporting members to old them in pothe reinforced supportingV the spacing or l sition until the floor cores are placed. The v floor cores 11 are then placed in pgslion with their lower edges supported een the flanges 9 and tongues l() of thehorizontal base portion. Suitableend closures vfor the Hoor cores maybe employed, and intermediate spacing rods are placed at intervals so -as to tie the supporting members together.

The concrete is now oured and produces the integral joists and o or slab shown in'Figure 6. After the concrete hardens the forms are quickly removed and can be used again if desired, or permanent forms may b e employed. Metal lath may now be secured 'to the bottom of the joists and plastered in the usual manner.

In the modified form of the inventionV the s oflit forms 30 may also be removed and reused; and the metal lathing attached to the wires 31.

From the fore oing description taken in connection with t e accompanying drawings it will be apparent that I have devised a, strong and durable reenforced supporting member for concrete forms which requires no exterior supports or props as in the constructions heretofore known, and' in which the weight of the green concrete is transmitted to those portions of the reinforced supporting members most able to carry the same, by means ofthe reenforcing rods hereinbefore described.

In accordance with the patent statutes I have described what I now believeto be the best embodiment of the invention, but I -do notrwish to be understood thereby as limiting myself or the scope of the invention, as many changes and modifications may .be

' 1 made without departing from the spirit of the invention; all such I aim to include in the scope of the appended claims.`

y lVhat I claim as new and desire to secure by Letters Patent is: v

1. 'In a concrete iloor or the like, .a vmetal reenforced supporting member including a horizontal base portion, langes on said base portion, and ton es struck-up from said flanges, whereby t e edges of core forms may be mounted between said ilanges and their respective tongues. y'

2. In a concrete floor or the like, a metal vreenforced supporting member including a horizontal base portion, flanges on said base portion,tongues struck-up from said flanges, and core forms supported on said base portion with their edges engaged between 'said flanges and tongues.

3. In a concrete lloor or the like, a metal reenforced supporting member composed of a pair of skeleton frames arranged back to back and secured together, overhanging flanges at the top of said frames, a horizontal base portion formed on the bottom of said frames, and reenforcin rods having their ends secured to sai overhanging flanges and their intermediate portions secured to said horizontal base portion. Y

4. In a concrete' floor or th llike, metal reenforced supporting members each composed of a pair of frames arranged back' to back, horizontally 's aced, -overhanging flangeson each pair o frames, and an ex# pansionV rod having downturned ends adapt* ed to be inserted between said horizontally spaced flanges. l Y

5. In a vconcrete floor Vor the like, an elongated metal -reenforced supporting member, ase members permanently secured to the-reenforcing member atthe ends thereof, a reenforcing rod having its ends secured to said member and providing an intermediate loop, soflit forms adapted to form continuations of said base members, and means for'detachably lsuspending said sollit forms from said reenforcing rod.

6. In a.concrete floor or the like, a metal reenforced supporting member, a reenforcing rod having its ends securedvto said member and provided with an intermediate loop,

a soffit form provided with apertures, vand wires'engaged over said loopportion of the reenforcing rod and having their ends passed through said'apertures and secured.

i PETER H. SEREFF. 

